/* ── Reset ────────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── Colour tokens — light mode (default) ─────────────────────
   These match PaperMod's light theme palette closely.
   Each token is overridden in the dark-mode block below.     */
:root {
  --bg:         #ffffff;
  --bg2:        #f3f4f6;
  --border:     #d1d5db;
  --text:       #111827;
  --muted:      #6b7280;
  --red:        #c0392b;

  /* Data-series colours are the same in both modes */
  --col-signal: #2563eb;
  --col-dist:   #16a34a;
  --col-score:  #b45309;
  --col-anom:   #c0392b;

  /* Chart internals (passed to Chart.js via JS) */
  --chart-grid: rgba(0, 0, 0, 0.07);
  --chart-tick: rgba(0, 0, 0, 0.45);

  --radius: 4px;
}

/* ── Colour tokens — dark mode ────────────────────────────────
   Triggered by the OS/browser preference, which PaperMod's
   toggle also sets via the <html data-theme="dark"> attribute.
   We target both mechanisms so either one works.             */
@media (prefers-color-scheme: dark) {
  :root {
	--bg:         #1a1a1a;
	--bg2:        #242424;
	--border:     #3a3a3a;
	--text:       #e5e5e5;
	--muted:      #888888;
	--red:        #e05252;

	--chart-grid: rgba(255, 255, 255, 0.07);
	--chart-tick: rgba(255, 255, 255, 0.40);
  }
}

/* PaperMod sets data-theme="dark" on <html> when toggled.
   This mirrors the media query so the toggle works too.     */
html[data-theme="dark"] {
  --bg:         #1a1a1a;
  --bg2:        #242424;
  --border:     #3a3a3a;
  --text:       #e5e5e5;
  --muted:      #888888;
  --red:        #e05252;

  --chart-grid: rgba(255, 255, 255, 0.07);
  --chart-tick: rgba(255, 255, 255, 0.40);
}

/* ── Layout ───────────────────────────────────────────────────── */
body {
  font-family: ui-monospace, 'Cascadia Code', 'Source Code Pro',
			   Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
  line-height: 1.5;
  background: var(--bg);
  color: var(--text);
  padding: 28px 32px 40px;
  max-width: 820px;
  margin: 0 auto;
}

h1 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.subtitle {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.04em;
  margin-bottom: 28px;
}

/* ── Parameter controls ───────────────────────────────────────── */
.ctrl-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

@media (max-width: 580px) {
  .ctrl-grid { grid-template-columns: repeat(2, 1fr); }
}

.ctrl label {
  display: block;
  font-size: 10px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}

.ctrl input[type="range"] {
  width: 100%;
  accent-color: var(--col-signal);
  margin-bottom: 4px;
}

.ctrl .val {
  font-size: 15px;
  font-weight: 600;
}

/* ── Buttons ──────────────────────────────────────────────────── */
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.btn {
  font-family: inherit;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 7px 16px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  border-radius: var(--radius);
  transition: background 0.12s, border-color 0.12s;
}

.btn:hover {
  background: var(--bg2);
  border-color: var(--muted);
}

.btn.reset {
  border-color: var(--red);
  color: var(--red);
}

.btn.reset:hover {
  background: color-mix(in srgb, var(--red) 10%, transparent);
}

/* ── Stat tiles ───────────────────────────────────────────────── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 20px;
}

@media (max-width: 580px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}

.stat {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
}

.stat .label {
  font-size: 10px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}

.stat .value {
  font-size: 20px;
  font-weight: 600;
}

/* Anomaly count tile gets its own accent colour */
.stat.anom .value {
  color: var(--red);
}

/* ── Warmup notice ────────────────────────────────────────────── */
.warmup-note {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 12px;
  min-height: 18px;
}

/* ── Chart panels ─────────────────────────────────────────────── */
.chart-block {
  margin-bottom: 14px;
}

.chart-label {
  font-size: 10px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 5px;
}

canvas {
  display: block;
  width: 100% !important;
}

/* ── Legend ───────────────────────────────────────────────────── */
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 12px;
  font-size: 11px;
  color: var(--muted);
}

.leg {
  display: flex;
  align-items: center;
  gap: 6px;
}

.leg-line {
  width: 16px;
  height: 2px;
  border-radius: 1px;
  flex-shrink: 0;
}

.leg-dash {
  width: 16px;
  height: 0;
  border-top: 2px dashed var(--red);
  flex-shrink: 0;
}

.leg-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
